Delayed Bags - Now I want them to Pay up the $40 delayed bag fee

I flew United from the States. I contacted Jetstar before I left, and they said they are partners with United and I could check my bags all the way through from SFO- San Francisco.

United released my bags to JetStar in Singapore but they were never picked up. They sat in limbo for 4 days, until a colleague of mine - who knows the airline industry told them to look in a particular bag holding area.

Anyway in Denpasar the Jet Star lost bag handling company had me sign a document that told me I would be compensated $40 AUD for my delayed bag, so I could go buy underwear, toothbrush, etc.

I filled my claim with Jetstar and they are now saying they don't offer $40 claims for delayed bags. I'm missing the first page of the claim form that states the $40 reimbursement. Does anyone know where I can find that info?

I don't really care about the money, its the principle now. I feel someone should open class action against them. I spent 4 hrs on the phone with them, and their customer service is terrible. They told me most people would of give up on their bags by now!